There's a function in a third party library that puts something on the kill ring that I want to use from my own function, but I don't want to pollute the user's kill ring. I ended up with this:
(let ((old-kill kill-ring))
(unwind-protect
(progn
;; stuff that messes with the kill ring here
)
(setq kill-ring old-kill)))It seems to work but I was sure there would be something that already did this, but I couldn't find anything. Is doing something like this frowned upon? Or why couldn't I find anything?